There're many kinds of pollution, such as air pollution, water pollution, soil pollution, noise pollution,... but I think the biggest problem in my city is water pollution. As you know, there's a long river in my city named is Luoc river. At first, the water of the river is very clean, local people could wash clothes by this water. In recent years, local people can't do as at first anymore. The reason is the water of river. It's not clean anymore - the color is between green and black. And the smell......is so terrible. Because the local people always throw rubbish, domestic waste,... to the river. That's reason why the river's not clean and it smells terrible. We need to do something to keep the river clean. Don't throw rubbish to the river; let's throw rubbish to the trash can. Propaganda to the local people that don't domestic wastewater discharge to the river when not processed. And, don't use pesticides anymore. At the weekend, we can row the boat to scavenge in the river. That is all my opinion. Thanks for your attendtion!

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